Development of a calibration methodology for hourly building energy simulation models using disaggregated energy use data from existing buildings /
total energy used by a building in a new design project and
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| Format: | Thesis Book |
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified] ;
1996.
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| Subjects: | |
| Online Access: | http://proxy.library.tamu.edu/login?url=http://proquest.umi.com/pqdweb?did=739326531&sid=1&Fmt=2&clientId=2945&RQT=309&VName=PQD |
| Summary: | total energy used by a building in a new design project and project savings of energy conservation retrofits in existing buildings. In retrofit projects, the model has to be calibrated to the measured data to accurately represent an actual building. For a number of years many research efforts have been dedicated to developing calibration procedures. However, many previously developed methods require long-term hourly monitoring which becomes a burden for small scale retrofit projects. The objective of this research is to develop an improved methodology so that long-term hourly monitoring is not required. This methodology will help building designers quickly identify energy consumption patterns in existing buildings before proposing any design retrofits. The proposed methodology concentrates on calibrating the temperature- independent components of the building. The procedures were developed and tested using two case study buildings. These procedures include systematic data collection, on-off tests to determine the power densities of the temperature-independent loads, two-to-four weeks of energy monitoring to derive end-use profiles, and disaggregation of the measured energy use data. The calibration procedure includes: (1) comparing the hourly simulated results to the two-to-four weeks of measured data, and (2) comparing the monthly simulated results to the monthly utility records. Results from the case study buildings show that when the simulated temperature- independent results are calibrated to similar information from two-to-four weeks of monitored data, they compare favorably to the temperature-independent periods from long term measured data as recorded in the monthly utility records. This confirms that the energy use of an existing building can be predicted with acceptable accuracy even when long-term hourly monitoring cannot be conducted. This is possible if the input to the simulation model is derived from a careful, yet simple procedure. The proposed procedures were linked to a previously developed energy simulation program. A user-interface of the program was modified to automatically present the graphical outputs and guidelines that will help a designer to calibrate the simulation model. The program also provides retrofit design guidelines, and it projects the savings that can be achieved by applying the retrofit strategies. |
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| Item Description: | Vita. "Major Subject: Architecture". |
| Physical Description: | xvi, 217 leaves : illustrations ; 28 cm. Issued also on microfiche from University Microfilms Inc. |
| Bibliography: | Includes bibliographical references: pages 185-195. |